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#!/usr/bin/env python
class Time60(object):
def __init__(self, hr, min):
self.hr = hr
self.min = min
def __str__(self):
return '%d:%d' % (self.hr, self.min)
__repr__ = __str__
def __add__(self, other):
return self.__class__(self.hr + other.hr,
self.min + other.min)
def __iadd__(self, other):
self.hr += other.hr
self.min += other.min
return self
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